My grandfather was born Israel Krevitsky in Aleksandria/Oleksandrya Ukraine (but it was then Russia). We know his parents were Abraham and Yetta Krevitsky and that he had a sister named Mariasia. That is it. We know nothing else except that he immigrated to the United States in 1904 but we believe he left Russia a few years earlier. We always thought he was from Odessa but discovered Aleksandria/Oleksandrya on shis US Naturalization papers, and then later on many of his sister's children's documents. Do you know what town or shtetl your family was from? my guess is that his name was changed to Mauritzio from something else like Moshe or Maurice or Max.
Hod Hasharon, Israel